A thorough evaluation of the BLU J4. We reviewed its performance and functions.

Created date: 02/27/2020, 06:05:44, Updated date: 02/27/2020, 09:28:16

Detailed review of BLU J4's features

Here's our thorough explanation of whether you should buy the BLU J4. We thoroughly evaluated how easy it is to hold, its operability, processing performance, multi-tasking performance, and more. We also reviewed how much we recommend it when compared to other models.

Summary of BLU J4 performance and functions

The size and weight of the BLU J4

The body of the BLU J4 is 28.5 in (72.3 mm) wide, 59.4 in (151 mm) long, and 3.9 in (10 mm) thick.Also, the screen size is 5.5 inch, and it weighs 5.6 oz (158 g).Its size is large compared to normal smart phones. While it may be slightly difficult to use with one hand, the screen is large and easy to see. I think this is a nice balance. It is recommended for those who want large screens instead of operating with one hand.It is quite heavy and not really suitable for operating with one hand.

BLU J4
BLU Vivo XL5
BLU G5 Plus
BLU J4BLU Vivo XL5BLU G5 Plus
Colorblue,black,brownblackblack,red,twilight,chameleon blue
Dimensions (width x height x thickness)28.5 in (72.3 mm) x 59.4 in (151 mm) x 3.9 in (10 mm)30.7 in (78 mm) x 63.5 in (161.4 mm) x 3.8 in (9.6 mm)30.7 in (78 mm) x 63.5 in (161.4 mm) x 3.8 in (9.6 mm)
Weight5.6 oz (158 g)6.4 oz (181 g)6.4 oz (181 g)
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Display of the BLU J4

The BLU J4 has a IPS LCD screen with a resolution of 720 x 1440.Compared to normal smart phones, its screen is relatively beautiful. It shows great images even when up close, such as when using it for VR.

BLU J4
BLU Vivo XL5
BLU G5 Plus
BLU J4BLU Vivo XL5BLU G5 Plus
Display size5.5 inch6.3 inch6 inch
Display typeIPS LCDIPS LCDIPS LCD
Screen resolution (width x height)720 x 1440720 x 1520720 x 1440
Pixel density292ppi266ppi268ppi
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The battery life of the BLU J4

The BLU J4 has a battery capacity of 2200mAh.It has pretty much the same battery capacity as a standard smartphone.

The processing capability of the BLU J4

The memory capacity is 1GB.It has low spec processing power and its performance is lower than typical smartphones.Also, memory space is slightly smaller than average smartphones. There are many times when storage space feels insufficient. Ultimately, it's just barely enough to get by.

BLU J4
BLU Vivo XL5
BLU G5 Plus
BLU J4BLU Vivo XL5BLU G5 Plus
Chipset
CPU specs1.3GHz×4(Quad core)1.6GHz×8(OctaCore)1.6GHz×8(OctaCore)
RAM size1GB3GB2GB
Storage size32GB64GB32GB
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The camera of the BLU J4

The BLU J4 has a back camera with 8 MP.The front camera has 8 MP.The rear camera performance is about the same as a typical smartphone. The image quality for longer distance photography is less than satisfactory, but on the whole, there are no issues with short distance photos.The front camera performance is also roughly the same as a standard smartphone. The image quality for longer distance photography is less than satisfactory, but on the whole, there are no issues with short distance photos.

BLU J4
BLU Vivo XL5
BLU G5 Plus
BLU J4BLU Vivo XL5BLU G5 Plus
Rear-camera resolution8 MP13 MP13 MP
Front-camera resolution8 MP13 MP8 MP
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Review of the product design of the BLU J4

Rating of the ease of carrying it around and getting it in and out of bags or pockets

When deciding whether to buy an BLU J4, the first important factor is its size. Smartphones are used daily, and so it is important how easily they can be carried around and pulled out of bags or pockets. This review assesses how easy it is to carry the BLU J4 around and put it away.

Ease of grasping it in your hand to carry around

The BLU J4 is easily held with one hand, and its size allows it to be firmly held. It is small enough to be held in one hand together with things like a wallet, but this may be a bit difficult for ladies with small hands.

Ease of carrying it around when placing it in your pocket

It doesn't feel strange even when you put the BLU J4 in a pocket. In addition, when sitting on a chair with the phone in a pocket, it can be kept comfortably as it doesn't get caught on one's clothes or body.

Ease of getting it in and out of your pocket

The BLU J4 has a size that makes it relatively easy to keep and take out. While it sometimes get caught when sticking out of the pocket, I think it is just a matter of getting used to it.

Ease of getting it in and out of your bag

The BLU J4 is a size that allows you to take it in and out of your bag and use it with ease. Also, since it is compact, even if your bag is small it won't get too bulky which is convenient.

Assessment of user-friendliness and ease of handling

It is important to consider the ease of using the phone in one hand. It can be said that it would be very useful if it is easier for you to send emails and instant messages or answer calls using one hand while cooking or using your computer. Here, we have reviewed the BLU J4 by focusing on the ease of using it in one hand and the ease of typing in letters.

Ease of grasping the phone in one hand

The BLU J4 is a size that allows you to have a firm grip even while using it. Since your hand is kept stable, it is difficult to accidentally drop the phone, and it is very easy to use. Since the original body size is small, the phone is still easy to hold even when using a case.

The weight you feel when using the phone with one hand

The BLU J4 is a slightly heavy smart phone so using it with one hand for a short period doesn't cause any pain, however when used for long periods continuously it can hurt your hand. If you add a case and accessories it feels even heavier. It is preferable to use the phone with two hands and a proper case.

Ease of pushing the upper button on the screen using one hand

Holding the BLU J4 with one hand tends to feel unstable when buttons are displayed on the edge of the screen. The size of the buttons doesn't make it impossible but it does make it more likely that you will drop it so take care.

The size of the buttons on the App

The buttons displayed on the BLU J4 are large, and therefore it is difficult to press the wrong ones. While some buttons may look small depending on the app, you probably won't feel that stressed when you actually use it.

Ease of typing in letters using the flick function

Keys on the BLU J4 can be pressed even when held with one hand, but your grip may weaken when trying to flick the buttons at the edges. As a result, it may become unstable in the hand when flicking quickly, but it won't be easy to drop as long as you are careful.

Ease of typing in letters using the keybord funtion

If you aren't being careful it is really easy to mistype when using the BLU J4 with two hands since the buttons are so small. In addition, typing at high speeds is pretty difficult and I can't say its very suited for it.

Assessment of whether it is suitable for standard use

Assessment of whether it is suitable for standard use

For people who use their smartphone on a daily basis, high performance is a rather important factor. When the performance is not good enough, then, for example, applications don't work as they should or the screen is difficult to see, and this causes stress. This review looks at whether the performance of the BLU J4 is suitable for making phone calls, messaging, or using SNS.

The size of the letters and the ease of operation

Because the display of the BLU J4 is much larger than ordinary phones, characters are displayed quite large. Therefore, it is suitable for reading long bodies of text and exchanging long messages while doing research.

Ease of reading sentences

Since the BLU J4 displays characters smoothly, it can display them beautifully. Even when viewing small characters, the jaggedness of the character outline is not at a level seen during normal viewing and is displayed very naturally. Because of this, it is difficult for your eyes to become tired and make the phone suitable for reading long bodies of text.

The beauty of the overal screen

The BLU J4 can display photos and videos beautifully. While people with good eyes can see jagged outlines when they look at the display up close, it is not really something of concern.

Ease of writing sentences

For the BLU J4, the on-screen keyboard covers part of the screen when typing, but there is sufficient space for operation. Its size is suitable for entering long sentences, but I feel it may be a bit clumsy when editing office documents.

Does it have sufficient performance to make calls and send emails?

When using the BLU J4 for calls, emails, or for chatting the processing power can be insufficient, and you can experience slowdowns as a result. When using apps it felt like the motion would get caught up which was a bit stressful. For ordinary more relaxed use this slowing isn't at a level that would bother you, but its performance is not suited for fast control.

Does it have sufficient performance to search for things and using Social Networks?

The performance felt lacking when using the internet and SNS. Sometimes the apps felt like they were running slowly. If I kept using it when that happened apps would close suddenly or stop completely.

Does it have sufficient performance to do other tasks while searching for things and using Social Networks?

For example, if you're using multiple apps simultaneously, such as swapping between SNS or chat frequently, it will gradually start to operate slowly. If you use it for a long period in this way apps can begin to forcefully close due to lack of memory and can crash.

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